Patents Assigned to Fuji Seiko Co.
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Patent number: 8662871Abstract: A tire vulcanizing device including: an upper annular mold attaching member and a lower annular mold attaching member that respectively attach side portion forming molds for forming side portions of a tire; a plurality of segments that respectively attach a plurality of segmented tread molds for forming a tread portion of the tire; and a mold closing mechanism for radially moving the segments to close the tread molds at an advanced end. The respective segments are respectively independently provided with heat medium passages for applying heat for vulcanization to the tread molds when supplied with a heat medium.Type: GrantFiled: November 9, 2010Date of Patent: March 4, 2014Assignees: Fuji Shoji Co., Ltd., Fuji Seiko Co., Ltd.Inventors: Chikara Takagi, Shigeaki Nomura, Yuichi Higuchi
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Patent number: 8540841Abstract: A rubber sheet jointing apparatus is provided with first holding means for releasably holding a joint end portion of one of two rubber sheets, second holding means provided movably relative to the first holding means for releasably holding a joint end portion of the other of the two rubber sheets, and operating means for pressure-contacting the end surfaces of the two rubber sheets respectively held by the first and second holding means by moving the second holding means relative to the first holding means. Mutually facing surfaces of the first and second holding means are respectively provided with holder portions which are formed as rugged portions each taking a comb tooth shape and which are able to partly overlap to mesh with each other.Type: GrantFiled: December 8, 2011Date of Patent: September 24, 2013Assignees: Fuji Shoji Co., Ltd., Fuji Seiko Co., Ltd.Inventor: Chikara Takagi
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Patent number: 8485806Abstract: A tire vulcanizing device includes a plurality of opening/closing cylinders for respectively independently moving a plurality of mold holding members, which respectively hold a plurality of segmented molds arranged in a circumference direction, forward and backward in radial directions, a plurality of positioning blocks arranged in respective spaces in the circumferential direction between the plurality of segmented molds, respective pairs of engaging members respectively provided at opposite sides of the respective mold holding members, and respective pairs of stopper members each pair of which are provided on the adjoining positioning blocks, for restricting the advanced end positions of the segmented molds in engagements with the respective pairs of engaging members.Type: GrantFiled: December 24, 2010Date of Patent: July 16, 2013Assignees: Fuji Shoji Co., Ltd., Fuji Seiko Co., Ltd.Inventors: Chikara Takagi, Tatsumi Tanaka, Ryuichi Nakagawa
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Patent number: 8397781Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.Type: GrantFiled: August 29, 2008Date of Patent: March 19, 2013Assignees: Fuji Seiko Co., Ltd., Fuji Shoji Co., Ltd.Inventor: Toshiaki Morisaki
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Publication number: 20120315346Abstract: A tire vulcanizing device includes a plurality of opening/closing cylinders for respectively independently moving a plurality of mold holding members, which respectively hold a plurality of segmented molds arranged in a circumference direction, forward and backward in radial directions, a plurality of positioning blocks arranged in respective spaces in the circumferential direction between the plurality of segmented molds, respective pairs of engaging members respectively provided at opposite sides of the respective mold holding members, and respective pairs of stopper members each pair of which are provided on the adjoining positioning blocks, for restricting the advanced end positions of the segmented molds in engagements with the respective pairs of engaging members.Type: ApplicationFiled: December 24, 2010Publication date: December 13, 2012Applicants: FUJI SEIKO CO., LTD., FUJI SHOJI CO., LTD.Inventors: Chikara Takagi, Tatsumi Tanaka, Ryuichi Nakagawa
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Patent number: 8293050Abstract: In a bead manufacturing method and bead manufacturing device, a former rotatably supported on a support base and pivotably holds opposite end portions of a plurality of elastically deformable spring members arranged on an outer circumference thereof with gaps in a circumferential direction for annularly winding a bead filler around the spring members, an actuation mechanism is provided for curving the spring members in the radial directions of the former, and a bead core holding portion is arranged at one end side of the former for holding a bead core. When the spring members are elastically deformed outward in the radial directions of the former to a semicircular shape, the bead filler annularly wound around the spring members are raised up to fixedly fit a short bottom side thereof on the outer circumference of the bead core held at one end side of the former.Type: GrantFiled: July 16, 2009Date of Patent: October 23, 2012Assignee: Fuji Seiko Co., Ltd.Inventor: Chikara Takagi
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Publication number: 20120263813Abstract: A tire vulcanizing device including: an upper annular mold attaching member and a lower annular mold attaching member that respectively attach side portion forming molds for forming side portions of a tire; a plurality of segments that respectively attach a plurality of segmented tread molds for forming a tread portion of the tire; and a mold closing mechanism for radially moving the segments to close the tread molds at an advanced end. The respective segments are respectively independently provided with heat medium passages for applying heat for vulcanization to the tread molds when supplied with a heat medium.Type: ApplicationFiled: November 9, 2009Publication date: October 18, 2012Applicants: FUJI SEIKO CO., LTD., FUJI SHOJI CO., LTD.Inventors: Chikara Takagi, Shigeaki Nomura, Yuichi Higuchi
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Patent number: 8215939Abstract: In a tire vulcanization forming mold which is circumferentially divided into a plurality of segment molds, a plurality of circumferential grooves are formed on each segment mold with spaces in a tire width direction; arc-shape mold blocks are detachably fitted respectively in the plurality of circumferential grooves; a plurality of slit grooves are formed on each mold block to open on side surfaces of the mold block; tread pattern forming blades are detachably inserted into these slit grooves in the tire width direction; and coming-off prevention engaging portions are provided on the slit grooves and the blades. Thus, the tire vulcanization forming mold is capable of enabling the blades to be replaced easily with respect to the segment molds.Type: GrantFiled: July 16, 2009Date of Patent: July 10, 2012Assignees: Fuji Seiko Co., Ltd., Fuji Shoji Co., Ltd.Inventors: Chikara Takagi, Tatsumi Tanaka
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Publication number: 20120080139Abstract: A rubber sheet jointing apparatus is provided with first holding means for releasably holding a joint end portion of one of two rubber sheets, second holding means provided movably relative to the first holding means for releasably holding a joint end portion of the other of the two rubber sheets, and operating means for pressure-contacting the end surfaces of the two rubber sheets respectively held by the first and second holding means by moving the second holding means relative to the first holding means. Mutually facing surfaces of the first and second holding means are respectively provided with holder portions which are formed as rugged portions each taking a comb tooth shape and which are able to partly overlap to mesh with each other.Type: ApplicationFiled: December 8, 2011Publication date: April 5, 2012Applicants: FUJI SEIKO CO., LTD., FUJI SHOJI CO., LTD.Inventor: Shigemasa TAKAGI
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Patent number: 8127817Abstract: A rubber sheet jointing apparatus is provided with a first holding member for releasably holding a joint end portion of one of two rubber sheets; a second holding member provided movably relative to the first holding member for releasably holding a joint end portion of the other of the two rubber sheets; and an operating member for pressure-contacting the end surfaces of the two rubber sheets respectively held by the first and second holding member by moving the second holding member relative to the first holding member. Mutually facing surfaces of the first and second holding member are respectively provided with holder portions which are formed as rugged portions each taking a comb tooth shape and which are able to partly overlap to mesh with each other.Type: GrantFiled: May 31, 2006Date of Patent: March 6, 2012Assignees: Fuji Shoji Co., Ltd., Fuji Seiko Co., Ltd.Inventor: Shigemasa Takagi
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Patent number: 8082965Abstract: A rubber sheet joining apparatus includes a cutting unit for cutting a ribbon of rubber sheet reinforced with cords to generate rubber sheet strips having different lengths; a sheet overlapping unit for overlapping and joining the rubber sheet strips having different lengths to make an overlapped and joined strip. First holding members hold a front end portion of a following overlapped and joined strip. Second holding members hold a rear end portion of a preceding overlapped and joined strip. Support guides movably support the first holding members relative to the second holding members. An operating unit moves the first holding members relative to the second holding members to butt-join the side surfaces of two successive overlapped and joins strips held respectively by the first holding members and the second holding members to generate a ply sheet.Type: GrantFiled: October 8, 2007Date of Patent: December 27, 2011Assignees: Fuji Seiko Co., Ltd., Fuji Shoji Co., Ltd.Inventors: Shigemasa Takagi, Chikara Takagi, legal representative
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Publication number: 20110183022Abstract: In a tire vulcanization forming mold which is circumferentially divided into a plurality of segment molds, a plurality of circumferential grooves are formed on each segment mold with spaces in a tire width direction; arc-shape mold blocks are detachably fitted respectively in the plurality of circumferential grooves; a plurality of slit grooves are formed on each mold block to open on side surfaces of the mold block; tread pattern forming blades are detachably inserted into these slit grooves in the tire width direction; and coming-off prevention engaging portions are provided on the slit grooves and the blades. Thus, the tire vulcanization forming mold is capable of enabling the blades to be replaced easily with respect to the segment molds.Type: ApplicationFiled: July 16, 2009Publication date: July 28, 2011Applicants: FUJI SEIKO CO., LTD, FUJI SHOJI CO., LTD.Inventors: Chikara Takagi, Tatsumi Tanaka
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Publication number: 20110155300Abstract: In a bead manufacturing method and bead manufacturing device, a former rotatably supported on a support base and pivotably holds opposite end portions of a plurality of elastically deformable spring members arranged on an outer circumference thereof with gaps in a circumferential direction for annularly winding a bead filler around the spring members, an actuation mechanism is provided for curving the spring members in the radial directions of the former, and a bead core holding portion is arranged at one end side of the former for holding a bead core. When the spring members are elastically deformed outward in the radial directions of the former to a semicircular shape, the bead filler annularly wound around the spring members are raised up to fixedly fit a short bottom side thereof on the outer circumference of the bead core held at one end side of the former.Type: ApplicationFiled: July 16, 2009Publication date: June 30, 2011Applicant: FUJI SEIKO CO., LTD.Inventor: Chikara Takagi
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Patent number: 7901608Abstract: A bladder is made to be expandable and contractible at a vulcanization position within a lower mold assembly and to be expandable and contractible also at a tire delivery position which is spaced a predetermined distance from the vulcanization position along a center axis of the lower mold assembly. With a centering shaft passing through an upper mold, the bladder and the lower mold assembly, a green tire loaded into the tire delivery position is held by the bladder by expanding the bladder and is loaded by the bladder into the lower mold assembly. After a vulcanization processing, the bladder removes the vulcanized tire from the vulcanization position to the delivery position, and after the centering shaft is drawn out from the lower mold assembly and the bladder, the bladder is contracted at the delivery position to make it possible to release the vulcanized tire from the bladder.Type: GrantFiled: July 8, 2004Date of Patent: March 8, 2011Assignees: Fuji Shoji Co., Ltd., Fuji Seiko Co., Ltd.Inventors: Chikara Takagi, Shigeaki Nomura, Ryuichi Nakagawa
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Publication number: 20110030835Abstract: In a bead wire winding and forming device, a guide mechanism guiding a bead wire to a former is supported to be movable in a tangential direction of the former and includes a movable body capable of clamping and unclamping the bead wire, a guide body supported on the movable body to be swingable in a plane parallel to a rotational axis of the former and having a guide portion for guiding the bead wire in the tangential direction of the former, and a restriction member for allowing the swing motion of the guide body when the movable body is at a retracted position but for restricting the swing motion of the guide body when the movable body is at an advanced position.Type: ApplicationFiled: February 16, 2009Publication date: February 10, 2011Applicant: FUJI SEIKO CO., LTD.Inventor: Toshiaki Morisaki
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Patent number: 7811400Abstract: The invention resides in enabling high-mix low-volume production by a compact apparatus for a rubber sheet reinforced with a cord of a belt material for a tire, a body-ply material, etc. variously changing a cord material, cord arrangement angle, width of sheet, etc. and relates to manufacturing apparatus and method for a rubber sheet reinforced with a cord according to wrapping around a rubber coated cord group continuously on a surface of a pair of a cylindrical rotating body rotating in the same direction or on a surface of a cylindrical rotating body disposed small diameter roller groups of plural number on a side surface of a cylinder.Type: GrantFiled: January 5, 2005Date of Patent: October 12, 2010Assignees: Fuji Seiko Co. Ltd., Fuji Shoji Co. Ltd.Inventors: Sigemasa Takagi, Tosiaki Morisaki, Hikaru Yamada
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Patent number: 7779882Abstract: An apparatus for manufacturing for a rubber sheet reinforced with a cord, it consists of a first cylinder formed to wrap around a rubber coated cord on a surface of the cylinder by rotating centering an axis of the cylinder and a second cylinder that is a smaller cylinder diameter than a cylinder diameter of the first cylinder and is established in parallel aligning a cylinder axis direction to the first cylinder, spirally winding continuously a great number of rubber coated cords on the surface of the cylinder contacting with each other by transferring the rubber coated cord from the first cylinder to the second cylinder.Type: GrantFiled: February 9, 2006Date of Patent: August 24, 2010Assignees: Fuji Seiko Co., Ltd., Fuji Shuji Co., Ltd.Inventors: Sigemasa Takagi, Tosiaki Morisaki, Kazumi Nakano, Yasunori Ozeki
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Publication number: 20100193137Abstract: In a body ply turn-up device, a plurality of arm components are circumferentially arranged to be movable in the axial direction of an operating shaft and to be pivotable radially of the operating shaft, guide members are respectively supported at both sides on an end portion of each arm component to be rotatable about an axis parallel to a pivot axis of each arm component, coil springs are interposed in respective spaces each between two guide members respectively supported on the arm components adjoining to be rotatable about respective arc axes around the operating shaft, and pressing members, which supplementarily cover respective spaces between the coil springs are rotatably supported on the arm components ahead of or behind the coil springs. Thus, the turn-up device can turn up both width-end portions of the body ply by an even pressing force without leaving any spaces in the circumference even in the case of being high in turn-up height.Type: ApplicationFiled: August 29, 2008Publication date: August 5, 2010Applicants: FUJI SEIKO CO., LTD., FUJI SHOJI CO., LTD.Inventor: Toshiaki Morisaki
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Patent number: 7426950Abstract: A radial pneumatic tire includes a body ply and two belts. Each of the body ply and the belts has ribbon pieces that are arranged along the circumferential direction of the tire. Each ribbon piece is joined with the adjacent ribbon pieces at the lateral sides. Each ribbon piece has parallel cords coated with rubber. The cords are arranged at a predetermined first cord interval. The cords at the joined ends of the adjacent ribbon pieces, or the cords with the joint in between, are arranged at a predetermined second cord interval. As a result, a tire having a high consistency and an improved weight balance is obtained.Type: GrantFiled: February 24, 2003Date of Patent: September 23, 2008Assignee: Fuji Seiko Co. Ltd.Inventor: Shigemasa Takagi
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Publication number: 20080223507Abstract: A rubber sheet joining apparatus comprises: a cutting unit for cutting a ribbon of rubber sheet reinforced with cords to generate rubber sheet strips having different lengths; a sheet overlapping unit for overlapping and joining the rubber sheet strips having different lengths to make an overlapped and joined strip; first holding members for holding a front end portion of a following overlapped and joined strip; second holding members for holding a rear end portion of a preceding overlapped and joined strip; support guides for movably supporting the first holding members relative to the second holding members; and an operating unit for moving the first holding members relative to the second holding members to butt-join the side surfaces of two successive overlapped and joined strips held respectively by the first holding members and the second holding members to generate a ply sheet.Type: ApplicationFiled: October 8, 2007Publication date: September 18, 2008Applicants: FUJI SEIKO CO., LTD., FUJI SHOJI CO., LTD.Inventors: Shigemasa Takagi, Chikara Takagi